Aquafresh White Trays are Aquafresh's answer to their competitor Crest's Whitestrips products enormous success. The trays are filled with a gel containing 10% hydrogen peroxide and are stuck to the teeth. The advantage to the White Trays is that they get in between the grooves and cracks between the teeth that the Whitestrips and other teeth whitening products do not. However, this also leads to a problem: getting gel on your gums. It is all too easy to get gel on your gums with Aquafresh White Trays, which will burn and damage them. Be careful of this when using Aquafresh White Trays.
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